<!--
 * @Author: error: error: git config user.name & please set dead value or install git && error: git config user.email & please set dead value or install git & please set dead value or install git
 * @Date: 2023-03-18 22:53:59
 * @LastEditors: error: error: git config user.name & please set dead value or install git && error: git config user.email & please set dead value or install git & please set dead value or install git
 * @LastEditTime: 2023-03-19 15:49:42
 * @FilePath: \从0到1的楷楷\从0到1的楷楷\pink系列\Javasritp\第四天\js\08-实参可以是变量.html
 * @Description: 这是默认设置,请设置`customMade`, 打开koroFileHeader查看配置 进行设置: https://github.com/OBKoro1/koro1FileHeader/wiki/%E9%85%8D%E7%BD%AE
-->
  <!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    // 求 n ~ m 的累加和
    function getSum(n = 0, m = 0) {
      let sum = 0
      for (let i = n; i <= m; i++) {
        sum += i
      }
      console.log(sum)
    }
    // getSum()
    // getSum(1, 2)
    let num1 = +prompt('请输入起始值:')
    let num2 = +prompt('请输入结束值:')
    // 调用函数
    getSum(num1, num2)  // 实参可以是变量
  </script>
</body>

</html>